"Six years I was single before this," she said. "I've never been truly loved like I am."

However, Clarkson joked that she was worried her first date with Blackstock could have been doomed.

"We've known each other for years, but we didn't start talking until the Super Bowl last February," she said. "And this is the funniest/worst thing ever - one of my superhero idols is Whitney Houston, and the day she died was our first date. I was like, 'This is a bad omen'."

Clarkson also quipped that she expected getting older to be more difficult, saying: "When I hit 30, I was like, 'I don't have a problem right now. There's nothing to work out. What am I going to do with my time?'

"Some people worry about getting older, but my life is getting easier, so I love it."